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try a differerent fix

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This commit is contained in:
Jared Van Bortel 2024-01-19 17:10:23 -05:00
parent e15c61635f
commit 32a392fe68
1 changed files with 7 additions and 7 deletions
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14
examples/perplexity/perplexity.cpp
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@ -458,23 +458,24 @@ static bool decode_helper(llama_context * ctx, llama_batch & batch, std::vector<
return true;
}
#define K_TOKEN_CHUNK 4
static void compute_logprobs(const float * batch_logits, int n_vocab, std::vector<std::thread>& workers,
const std::vector<std::pair<size_t, llama_token>>& eval_pairs, std::vector<float>& eval_results) {
constexpr int k_token_chunk = 4;
if (eval_results.size() != eval_pairs.size()) {
eval_results.resize(eval_pairs.size());
}
if (eval_pairs.empty()) return;
size_t max_threads = std::min((eval_pairs.size() + k_token_chunk - 1)/k_token_chunk, workers.size());
size_t max_threads = std::min((eval_pairs.size() + K_TOKEN_CHUNK - 1)/K_TOKEN_CHUNK, workers.size());
std::atomic<int> counter(0);
auto compute = [&counter, &eval_pairs, &eval_results, batch_logits, n_vocab, k_token_chunk] () {
float local_logprobs[k_token_chunk];
auto compute = [&counter, &eval_pairs, &eval_results, batch_logits, n_vocab] () {
float local_logprobs[K_TOKEN_CHUNK];
while (true) {
size_t first = counter.fetch_add(k_token_chunk, std::memory_order_relaxed);
size_t first = counter.fetch_add(K_TOKEN_CHUNK, std::memory_order_relaxed);
if (first >= eval_results.size()) break;
size_t last = std::min(first + k_token_chunk, eval_results.size());
size_t last = std::min(first + K_TOKEN_CHUNK, eval_results.size());
for (size_t i = first; i < last; ++i) {
auto logits = batch_logits + eval_pairs[i].first * n_vocab;
float max_logit = logits[0];
@ -497,7 +498,6 @@ static void compute_logprobs(const float * batch_logits, int n_vocab, std::vecto
for (size_t it = 0; it < max_threads; ++it) {
workers[it].join();
}
}
static void hellaswag_score(llama_context * ctx, const gpt_params & params) {